The ending of the Sermon on the Mount is majestic, imposing, ominously authoritative and frighteningly demanding. After laying out what looks like an impossible standard of conduct, Christ says all who don’t obey Him and do what He says will be eternally destroyed (Mt 7:26-27), including many who call Him Lord. (22) If the Gospel is simply a free gift of salvation to all who are willing to receive it, how do we square this up?
One way is to ignore the warning and hope for the best, that God’s love and grace will cover our sin and we’ll be fine in the end even if we don’t obey Him. This isn’t wisdom, to say the least; it’s building on the sand: equivalent to rejecting Christ Himself. (Jn 12:48) We can say we’re receiving Christ while we’re ignoring what He says, but it’s pointless doubletalk. (Ja 2:20) Christ is saying something exceedingly profound, and He means exactly what He says; we ignore Him at our eternal peril. (De 18:19)
Another way to deal with this is to claim we’re saved by obeying Christ, reject the idea of salvation is a free gift and try to earn it. Another dead end, hopeless approach. (Ga 3:10)
The correct way to resolve this must be that those who are justified freely by His grace also obey Him (1Pe 1:2), not to earn salvation but as a necessary consequence of believing in Christ. Though works aren’t the cause of salvation, they must be the evidence that salvation has taken place. In other words, faith alone is a myth (Ja 2:17); faith and works always go together, we can’t separate them.
This implies those who are saved cannot live in willful disobedience as a manner of life. If our lives don’t reflect faith in the Son of God, we shouldn’t deceive ourselves; we should seek God until we find Him, until He reveals Christ in us and begins to sanctify and transform us. (Ep 2:10)
It also implies that Christ is not demanding absolute, sinless perfection from the start of our spiritual journey; there’s a sanctification process where we grow in faith and love over time. (Php 1:9) While we’re growing, we find within the longing to be more holy and obedient (He 12:14); continuous, stubborn defiance does not characterize the child of God. (15)
If we’re justified in Christ, we’ll be able to see how Christ is working within us obedience to all of His words, ensuring our lives are bearing out the fruit He says will come. Where we aren’t obeying too well yet in a particular area, we ask Him to show us why and heal us so we become more like Him. (Ja 5:16)
This is how we dig deep, laying up for ourselves a good foundation against the time to come, and lay hold on eternal life (1Ti 6:18-20), grounding our eternal home in the Rock Himself: Christ Jesus.