Hebrews 10:26

“If one man sins against another, God will mediate for him; but if a man sins against Yahweh, who can pray for him?” But they would not listen to the voice of their father, for Yahweh desired to put them to death.

For what the Law could not do, weak as it was through the flesh, God did: sending His own Son in the likeness of sinful flesh and as an offering for sin, He condemned sin in the flesh,

who desires all men to be saved and to come to the full knowledge of the truth.

and having fallen away, it is impossible to renew them again to repentance, since they again crucify to themselves the Son of God and put Him to open shame.

For it would be better for them not to have known the way of righteousness, than having known it, to turn away from the holy commandment handed on to them.

If anyone sees his brother committing a sin not leading to death, he shall ask and God will for him give life to those who commit sin not leading to death. There is a sin leading to death; I do not say that he should make request for this.

Warning Against Willful Sin