Hebrews 2:17; Hebrews 3:2; Hebrews 3:5; Hebrews 10:23; Hebrews 11:11

17 Wherefore in all things it behoved him to be made like unto his brethren, that he might be a merciful and faithful high priest in things pertaining to God, to make reconciliation for the sins of the people.
2 Who was faithful to him that appointed him, as also Moses was faithful in all his house.
5 And Moses verily was faithful in all his house, as a servant, for a testimony of those things which were to be spoken after ;
23 Let us hold fast the profession of our faith without wavering; (for he is faithful that promised ;)
11 Through faith also Sara herself received strength to conceive seed, and was delivered of a child when she was past age , because she judged him faithful who had promised .