Romans 8:15-16

8:15 For you did not receive the spirit of slavery leading again to fear, but you received the Spirit of adoption, by whom we cry, “Abba, Father.” 8:16 The Spirit himself bears witness to our spirit that we are God’s children.

Romans 8:26-27

8:26 In the same way, the Spirit helps us in our weakness, for we do not know how we should pray, but the Spirit himself intercedes for us with inexpressible groanings. 8:27 And he who searches our hearts knows the mind of the Spirit, because the Spirit intercedes on behalf of the saints according to God’s will.