I’m reading these again and noted these examples of connections. Read John Gill’s comment on just this verse. Note how many possible verse references he describes.
Heb 2:13 And again, I will put my trust in him. And again, Behold I and the children which God hath given me.
Hebrews 2:13 Gill
These words are taken not from Isa 8:17 where, in the Septuagint version, is a like phrase; for they are not the words of the Messiah there, but of the prophet; and besides, the apostle disjoins them from the following words, which stand there, by saying, “and again”; but they are cited from Psa 18:2 in which psalm are many things which have respect to the Messiah, and his times; the person spoken of is said to be made the head of the Heathen, to whom unknown people yield a voluntary submission, and the name of God is praised among the Gentiles, Psa 18:43. The Targum upon it makes mention of the Messiah in Psa 18:32 and he is manifestly spoken of under the name of David, in Psa 18:50 and which verse is applied to the Messiah, by the Jews, both ancient and modern (i): and these words are very applicable to him, for as man he had every grace of the Spirit in him; and this of faith, and also of hope, very early appeared in him; he trusted in God for the daily supplies of life, and that he would help him in, and through the work of man’s salvation; see Psa 22:9 he committed his Spirit into his hands at death, with confidence, and believed he would raise his body from the dead; and he trusted him with his own glory, and the salvation of his people: and this is a citation pertinent to the purpose, showing that Christ and his people are one, and that they are brethren; for he must be man, since, as God, he could not be said to trust; and he must be a man of sorrows and distress, to stand in need of trusting in God.
And again, behold I and the children which God hath given me; this is a citation from Isa 8:18 in which prophecy is a denunciation of God’s judgments upon Israel, by the Assyrians, when God’s own people among them are comforted with a promise of the Messiah, who is described as the Lord of hosts; who is to be sanctified, and be as a sanctuary to the saints, and as a stone of stumbling to others; and the prophet is ordered to bind and seal up the doctrine among the disciples, at which he seems astonished and concerned, but resolves to wait; upon which Christ, to encourage him, speaks these words; for they are not addressed to God, as the Syriac version renders them, “behold I and the children, whom thou hast given me, O God”; in which may be observed, that the saints are children with respect to God, who has adopted them, and with respect to Christ, who is their everlasting Father; that they were given to Christ as his spiritual seed and offspring, as his portion, and to be his care and charge; and that this is worthy of attention, and calls for admiration, that Christ and his people are one, and that he is not ashamed to own them before God and men.
(i) Echa Rabbati, fol. 50. 2. Tzeror Hammor, fol. 47. 3.
Joh 6:36 But I said unto you, That ye also have seen me, and believe not.
Joh 6:37 All that the Father giveth me shall come to me; and him that cometh to me I will in no wise cast out.
Joh 6:38 For I came down from heaven, not to do mine own will, but the will of him that sent me.
Joh 6:39 And this is the Father’s will which hath sent me, that of all which he hath given me I should lose nothing, but should raise it up again at the last day.
Joh 6:40 And this is the will of him that sent me, that every one which seeth the Son, and believeth on him, may have everlasting life: and I will raise him up at the last day.
Also I’ll add this one Link back to Leviticus 9 where Aaron served in his priestly role….
Heb 2:17 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.
Heb 2:18 For in that he himself hath suffered being tempted, he is able to succour them that are tempted.
Lev 9:1 And it came to pass on the eighth day, that Moses called Aaron and his sons, and the elders of Israel;
Lev 9:2 And he said unto Aaron, Take thee a young calf for a sin offering, and a ram for a burnt offering, without blemish, and offer them before the LORD.
You can listen to both chapters here: