Hebrews 8:3
8:3 For every high priest is appointed to offer both gifts and sacrifices. So this one too had to have something to offer.
Hebrews 9:8
9:8 The Holy Spirit is making clear that the way into the holy place had not yet appeared as long as the old tabernacle was standing.
Hebrews 10:12
10:12 But when this priest had offered one sacrifice for sins for all time, he sat down at the right hand of God,
Hebrews 11:17
11:17 By faith Abraham, when he was tested, offered up Isaac. He had received the promises, yet he was ready to offer up his only son.