God: "I looked for someone to take a stand for me, and stand in the gap" (Ezekiel 22:30)
A Roman seal conveyed authenticity, security, ownership, and authority. And the Spirit of God represents those same realities in the lives of His children. Those who have received the Holy Spirit can rest assured that they are truly saved (authenticity) and that their salvation can never be lost or stolen from them (security). Moreover, the Spirit’s presence in their lives demonstrates that God is their Lord and Master (ownership). As they are led by the Spirit, they will manifest a life of submissive obedience to Christ (authority). All this is part of the Spirit’s sealing work.
The New Testament makes it clear that Jesus never sinned (Heb 4:15; 9:14; 1 Pet 1:19). And although theologians have debated the question of Christ’s impeccability—whether or not he could have sinned—it seems that the answer most consistent with the fullness of the New Testament revelation is that Christ, in fact, could not have sinned. Because the person of Christ is divine, and a divine person, being necessarily good, cannot sin, it seems best to argue for Christ’s impeccability. But this understanding of Christ’s inability to sin need not detract from the biblical teaching that Christ, as a human, was indeed tempted (Matt 4:1–11) and even “suffered” in his temptations (Heb 2:18). There may be better and worse ways of reconciling these two apparently contradictory aspects of the New Testament teaching, but however we attempt to reconcile them, it seems best to hold them both, without seeking to alleviate the tension by diminishing either (Luke Stamps).
