why is isreal call the first born son and why will God want to kill moses ?

Its simple- Moshe is from the original hebrew text, from the book diuctated by G-d known as the Torah.

Jesus is from a Pagan add-on to Judaism that tries to supplant Judaism and to insert Pagan ideaology and theology into Judaism.

As for the incident with Moshe- he had failed to circumcise his son. For somebody else a major offense, but not deserving of death; for someone of Moshes standing, someone desingated to take the jews out of Egypt to receive the Torah, the standard is set much higher!

There's no evidence "he" did. Or anyone else. It's a story without any historical or archeological evidence to back it up. But if your supposed god does exist and did kill all the male babies in an entire country, what does that say about your supposed god? That he murders innocent babies for no good reason, when he could have very easily used his vast power to simply pick the Hebrews up and put them into the promised land? If your god does exist, he's an idiot. Peace.

The were the children of the covenant. See the Abrahamic covenant. Gen 17.

As for killing Moses, it was because he hesitated in obedience. Obedience is the first law of heaven. 1 Sam 15:22

GOD'S DISPLEASURE AGAINST MOSES, AARON MEETS HIM, THE PEOPLE BELIEVE THEM. (4:24-31)

God met Moses in anger. The Lord threatened him with death or sent sickness upon him, as the punishment of his having neglected to circumcise his son. When God discovers to us what is amiss in our lives, we must give all diligence to amend it speedily. This is the voice of every rod; it calls us to return to Him that smites us. God sent Aaron to meet Moses. The more they saw of God's bringing them together, the more pleasant their interview was. The elders of Israel met them in faith, and were ready to obey them. It often happens, that less difficulty is found than was expected, in such undertakings as are according to the will of God, and for his glory. Let us but arise and try at our proper work, the Lord will be with us and prosper us. If Israel welcomed the tidings of their deliverance, and worshipped the Lord, how should we welcome the glad tidings of redemption, embrace it in faith, and adore the Redeemer

—Matthew Henry Concise

Exodus is from the Tanakh, the original Hebrew, Jewish scriptures.

The Christian 'new' Testament is just that: Christian.

Judaism and Christianity are both great faiths, with moral teachings at their core - but they are *separate* faiths and thus contradict each other.

The Christian 'old testament' is a Church version OF the Jewish Tanakh. In some instances it is MIStranslated and MISinterpreted.

1- After God had appeared in the bush, he often spake to Moses. Pharaoh had hardened his own heart against the groans and cries of the oppressed Israelites; and now God, in the way of righteous judgment, hardens his heart against the teaching of the miracles, and the terror of the plagues. But whether Pharaoh will hear, or whether he will forbear, Moses must tell him, Thus saith the Lord. He must demand a discharge for Israel, Let my son go; not only my servant, whom thou hast no right to detain, but my son. It is my son that serves me, and therefore must be spared, must be pleaded for. In case of refusal I will slay thy son, even thy first-born. As men deal with God’s people, let them expect so to be dealt with.

# 2 - The Lord met ("caught up") with Moses in an inn on his way back to (or in) Egypt, and in some way or another made it very clear to Moses that he was in danger of being mortally chastised for his sin of not submitting his son to circumcision, which was to be in obedience to the Abrahamic covenant and a sign of Israel's redemption. Apparently, Zipporah probably had been giving Moses a hard time about that--not wanting her son to have to have that painful thing done to him, and resenting the bloody ritual it was. Reluctantly, however, she did comply (because of the divine threat against Moses no doubt) and she at last circumcised their son, angrily throwing the removed foreskin at Moses' feet. (I wonder why Moses didn't do the "surgery" himself? Was he sick--almost to the point of dying--and could not do the job? Perhaps a lesson here of family conflict when husbands don't take early enough the responsibility of spiritual leadership--the wives have to do the job--and obviously they don't like it!--Zipporah was angry about it, though that was a spiritual problem of her own). Anyway, verse 26, "So he (the LORD) let him (Moses) go." The danger of Moses being taken in death was removed. Notice the verse repeats the angry response of his wife. She did not understand the covenant sign the Lord had given. And Moses obeyed in the nick of time. I've often wondered who God would have raised up instead of Moses to deliver Israel out of Egypt. What do we "mess up" when we disobey God? However, God is in control, and His will and purposes and promises will all come to pass and be fulfilled, with our obedience, or, if need be, without it.