Romans 8:17

“And if children, then heirs, etc..] Children, whether natural or adopted, are heirs to their parents, and according to the Roman laws, which some think the apostle here respects, whether male or female; but according to the Jewish laws f146, females did not inherit only in case of want of male issue; for though Job's daughters inherited with his sons, this was a peculiar case; and the Jewish writers say f147, it was ˆypwyw ˆtbyçj Æwtm, “on account of their worth and beauty”; yet adopted children among them, whether male or female, were equal to natural children in possessing the inheritance; however, the apostle includes both here, who are all one in Christ Jesus, and are all the children of…”

“And if children, then heirs--"heirs also." heirs of God--of our Father's kingdom. and joint-heirs with Christ--as the "First-born among many brethren" (Rom 8:29), and as "Heir of all things" (Heb 1:2). if so be that we suffer--"provided we be suffering with Him." that we may be also glorified together--with Him. This necessity of conformity to Christ in suffering in order to participate in His glory, is taught alike by Christ Himself and by His apostles (Joh 12:24-26; Mat 16:24-25; Ti2 2:12).”

“And if children - If adopted into his family. Then heirs - That is, he will treat us as sons. An heir is one who succeeds to an estate. The meaning here is, that if we sustain the relation of sons to God, that we shall be treated as such, and admitted to share his favors. An adopted son comes in for a part of the inheritance, Numbers 27:0. Heirs of God - This expression means that we shall be partakers of that inheritance which God confers on his people. That inheritance is his favor here, and eternal life hereafter. This is an honor infinitely higher than to be heir to the most princely earthly inheritance; or than to be the adopted son of the most magnificent earthly monarch. And joint…”

“Joint heirs - That we may know it is a great inheritance which God will give us for he hath given a great one to his Son. If we suffer with him - Willingly and cheerfully, for righteousness' sake. This is a new proposition, referring to what follows. Romans 8:18”

“8:17 Jesus is heir to all of God’s promises (Mark 12:1-12; Gal 3:18-19; Heb 1:2), and as those who belong to Jesus, we share with him in that glorious inheritance. However, just as it was for Jesus, our path to glory is also marked by suffering. We experience the difficulties that come from striving to live righteously in a world dominated by sin (2 Cor 1:5; Phil 1:29; 3:10).”

“if children: Rom 8:3, Rom 8:29, Rom 8:30, Rom 5:9, Rom 5:10, Rom 5:17; Luk 12:32; Act 26:18; Gal 3:29, Gal 4:7; Eph 3:6; Tit 3:7; Heb 1:14, Heb 6:17; Jam 2:5; Pe1 1:4 heirs of: Mat 25:21; Luk 22:29, Luk 22:30; Joh 17:24; Co1 2:9, Co1 3:22, Co1 3:23; Rev 3:21, Rev 21:7 if so be: Mat 16:24; Luk 24:26; Joh 12:25, Joh 12:26; Act 14:22; Co2 4:8-12; Phi 1:29; Ti2 2:10-14 Romans 8:18”