In what book and verses of the New Testament did Christ speak of those that brag about being charitable and...?

Matthew 6:1 " Take heed that ye do not your alms before men, to be seen of them: otherwise ye have no reward of your Father which is in heaven.

2 Therefore when thou doest thine alms, do not sound a trumpet before thee, as the hypocrites do in the synagogues and in the streets, that they may have glory of men. Verily I say unto you, They have their reward.

3 But when thou doest alms, let not thy left hand know what thy right hand doeth:

4 That thine alms may be in secret: and thy Father which seeth in secret himself shall reward thee openly"

Matt 23 speaks about a lot of hypocrisy

Matthew 23:14

Woe to you, scribes and Pharisees, hypocrites! For you devour widows’ houses, and for a pretense make long prayers. Therefore you will receive greater condemnation.

23 “Woe to you, scribes and Pharisees, hypocrites! For you pay tithe of mint and anise and cummin, and have neglected the weightier matters of the law: justice and mercy and faith.