Hebrews 10:5

“Wherefore, when he cometh into the world, he saith, etc..] In (<194007>Psalm 40:7,8). This was said by David, not of himself, and his own times, for sacrifice and offering were desired and required in his times; nor was he able to do the will of God; so as to fulfil the law, and make void legal sacrifices; nor did he engage as a surety to do this; nor was it written of him in the volume of the book that he should: besides, he speaks of one that was not yet come, though ready to come, when the fulness of time should be up; and who is here spoken of as coming into the world, and who is no other than Jesus Christ; and this is to be understood, not of his coming into Judea, or the temple at…”

“Christ's voluntary self offering, in contrast to those inefficient sacrifices, is shown to fulfill perfectly "the will of God" as to our redemption, by completely atoning "for (our) sins." Wherefore--seeing that a nobler than animal sacrifices was needed to "take away sins." when he cometh--Greek, "coming." The time referred to is the period before His entrance into the world, when the inefficiency of animal sacrifices for expiation had been proved [THOLUCK]. Or, the time is that between Jesus' first dawning of reason as a child, and the beginning of His public ministry, during which, being ripened in human resolution, He was intently devoting Himself to the doing of His Father's will…”

“Wherefore - This word shows that the apostle means to sustain what he had said by a reference to the Old Testament itself. Nothing could be more opposite to the prevailing Jewish opinions about the efficacy of sacrifice, than what he had just said. It was, therefore, of the highest importance to defend the position which he had laid down by authority which they would not presume to call in question, and he therefore makes his appeal to their own Scriptures. When he cometh into the world - When the Messiah came, for the passage evidently referred to him. The Greek is, “Wherefore coming into the world, he saith.” It has been made a question “when” this is to be understood as spoken - whether…”

“When he cometh into the world - In the fortieth psalm the Messiah's coming into the world is represented. It is said, into the world, not into the tabernacle, Heb 9:1; because all the world is interested in his sacrifice. A body hast thou prepared for me - That I may offer up myself. Psa 40:6, &c. Hebrews 10:7”

“10:5-7 These verses quote Ps 40:6-8. Psalm 40 is a hymn of praise to God in which the psalmist confesses his desire to do God’s will. The author of Hebrews understands Christ to be the speaker. 10:5 But you have given me a body to offer: God had prepared the psalmist to be obedient, ready to do God’s will; Hebrews now applies this idea to Christ. For Hebrews, the preparation of a human body, specifically Christ’s body, shows that God would use it as a superior sacrifice.”

“when: Heb 10:7, Heb 1:6; Mat 11:3; Luk 7:19 \*Gr. Sacrifice: Psa 40:6-8, 50:8-23; Isa 1:11; Jer 6:20; Amo 5:21, Amo 5:22 but: Heb 10:10, Heb 2:14, Heb 8:3; Gen 3:15; Isa 7:14; Jer 31:22; Mat 1:20-23; Luk 1:35; Joh 1:14; Gal 4:4; Ti1 3:16; Jo1 4:2, Jo1 4:3; Jo2 1:7 hast thou prepared me: or, thou hast fitted me Hebrews 10:6”