We are confident that God will bless us as he promised; he made an oath to confirm that he would do that.

Hebrews 6:13-20

13 When God promised to do things for Abraham, he said that he would punish himself if he did not do that, because there was no one of greater importance to ask to punish him if he did not do it. 14 He said to Abraham, “I will certainly bless you (sg), and I will certainly increase the number of your descendants [SYN].” 15 As a result, after Abraham patiently waited for God to do what he promised, he received what God promised him. 16 Keep in mind that when people promise something, they ask a more important person to punish them if they do not do what they promise. Furthermore, when people ask God to punish them if they do not tell the truth, that causes people who are disputing to stop disputing. 17 So, when God wanted to demonstrate very clearly ◄to us/to those people► who would receive what he had promised that he would not change what he had purposed to do, he solemnly guaranteed that he would declare himself guilty if he did not do what he promised. 18 He did that to strongly encourage us as a result of our knowing that God has done two things that cannot change. Namely, he promised to bless us, and he solemnly declared that he would declare himself guilty if he did not bless us. We know that God, who did those things, cannot lie. We have fled to him in order that we might continue confidently to expect to receive what he promised us. 19 Our confidently expecting [SYN] to receive what he has promised is like an anchor [MET] that very firmly [DOU] holds us fast. The one we confidently expect to help us [SYN] is Jesus, who goes into God’s very presence, just like the Supreme Priests went behind the curtain into the innermost part of the tent in the barren area [MET]. 20 Jesus went into God’s presence ahead of us (inc) to help us when he became a Supreme Priest eternally in the way that Melchizedek was a Supreme Priest.