Hebrews 2:11-13

For both the one sanctifying, and the ones being sanctified are all out of one; So Jesus is not ashamed to call them brothers, saying,
I will declare your name to my brothers, in the presence of the congregation I will sing your praises.
And again,
I will put my trust in him
And again,
Here am I, and the children God has given me.

In chapter 1 of Hebrews, Paul emphasizes the God side of Jesus, that he is greater than any spiritual being and sits on the highest throne. In chapter 2, the emphasis is more on the human side of Jesus. He is the one who was like us, flesh and blood.

In light of this, Paul says, both the one sanctifying (Jesus, he is setting us apart for his purposes), and the ones being sanctified (Christians) are all from one. In the Greek, it just reads out of (or from) one. The NIV adds the word family to the end, I believe the NASB adds Father, but really either or both are appropriate in this situation, because this section talks about how Jesus became flesh like us, he made himself like us on purpose.

He didn't come in the form of and angel, terrifying us with his glory, and he didn't come in the form of an animal (like most other religions of the time portrayed visiting gods as, think Egyptian and Greek/Roman gods, they are all animals on earth). But he came in our form, like us. Because he was like us, he is not ashamed to call us his brothers (and sisters). A lot of the time, we feel unworthy to be a Christian, we feel like we are not good enough. But Jesus is merciful and gracious, he even calls us family. God is our Father, he is our brother, and we get to be in their family, even though we have sinned. What a great thought, there is no black sheep in God's family because Jesus is proud of the fact that we are a part of it (now this of course does not give us license to sin, but it does give us grace because we are not perfect).

Paul then quotes from 3 passages from the Hebrew Scriptures:

The first, "I will declare you name to my brothers..." is found in one of the most revealing Messianic Psalms, Psalm 22. Read the entire Psalm for yourself and see how many of these verses are quoted in the NT and applied to Jesus. And really I think you can take that Psalm and apply all of it to him. In this verse, Jesus tell his brothers (us) about God the Father through words and songs. He is the one who teaches us about God, because he came from God and knows him as a Son knows his Father

The second, "I will put my trust in him" is from a number of different places in the Hebrew Scriptures (Isaiah 8:17, 12:2 and 2 Samuel 22:3). It can be taken from any of these places and really regardless of where it is quoted from, the message is the same, Jesus put his trust in God, likewise we must trust God. Think of the garden before Jesus is crucified, Jesus cries out, not my will but yours. He knows he is going to die and he trusts that God will be righteous and just and resurrect him. He is putting his life in the hands of God. So too we must put our lives in God's hands and trust him.

The third is "Behold, I and the children whom God has given me" is from Isaiah 8:18. In this passage, Judah is under attack from their enemies to the north. The prophet Isaiah, the one with the big book in the middle of the Bible, are trying to call everyone in Judah not to be afraid, but to trust in God and follow his ways. The people might see this as a political and military crisis, but Isaiah and his children are calling them to be faithful to God in this seemingly hopeless situation. This final picture is one of unity, this family coming together, calling all to trust in God. In the same way, Jesus is with us Christians as we all stand up together calling all not to fear, but to find peace and truth in God.

This section points to the humanity of Jesus. He can identify with us, he knows us and our thoughts, and even though we sin, he loves us and calls us to continue to be faithful to him and God. So take heart, he wants you to be a part of the family of God, those who follow him and trust in him.