Here is the late Kelley Varner who has some excellent Covenant Theology teaching. This is basically a summary of his book “Whose Right it Is” wherein he makes some of the arguments that solidified the doubts I had about dispensationalism and the rapture.
For ye have not received the spirit of bondage again to fear; but ye have received the Spirit of adoption, whereby we cry, Abba, Father. The Spirit itself beareth witness with our spirit, that we are the children of God: And if children, then heirs; heirs of God, and joint-heirs with Christ; if so be that we suffer with him, that we may be also glorified together. For I reckon that the sufferings of this present time are not worthy to be compared with the glory which shall be revealed in us.