Hebrews 5:8; Hebrews 7:5; Hebrews 12:17

8 Though he were a Son, yet learned he obedience by the things which he suffered;

5 And verily they that are of the sons of Levi, who receive the office of the priesthood, have a commandment to take tithes of the people according to the law, that is, of their brethren, though they come out of the loins of Abraham:

17 For ye know how that afterward, when he would have inherited the blessing, he was rejected: for he found no place of repentance, though he sought it carefully with tears.