'Sons' in the Bible

Now if the ministry of death, chiseled in letters on stones, came with glory, so that the Israelites were not able to look directly at Moses’ face because of the glory from his face—a fading glory—

We are not like Moses, who used to put a veil over his face so that the Israelites could not stare at the end of what was fading away,

And will be a Father unto you, and ye shall be my sons and daughters, saith the Lord Almighty.