Every high priest is selected from among the people and is appointed to represent them in matters related to God, to offer gifts and sacrifices for sins.
NIV
FOR EVERY high priest chosen from among men is appointed to act on behalf of men in things relating to God, to offer both gifts and sacrifices for sins.
AMP
For every high priest taken from among men is ordained for men in things pertaining to God, that he may offer both gifts and sacrifices for sins:
KJV
In the same way, Christ did not take on himself the glory of becoming a high priest. But God said to him, "You are my Son; today I have become your Father."
NIV
So too Christ (the Messiah) did not exalt Himself to be made a high priest, but was appointed and exalted by Him Who said to Him, You are My Son; today I have begotten You; [Ps. 2:7.]AMP
So also Christ glorified not himself to be made an high priest; but he that said unto him, Thou art my Son, to day have I begotten thee.
KJV
Anyone who lives on milk, being still an infant, is not acquainted with the teaching about righteousness.
NIV
For everyone who continues to feed on milk is obviously inexperienced and unskilled in the doctrine of righteousness (of conformity to the divine will in purpose, thought, and action), for he is a mere infant [not able to talk yet]!
AMP
For every one that useth milk is unskilful in the word of righteousness: for he is a babe.
KJV