Some things that stick out to me as highlights from the post-Pentecostal advance of the gospel in the New Testament:

1. A sense of urgency (2 Peter 3:8-13)
2. Supernatural attestation of the authority of the message and its messengers (Acts 1:8ff)
3. High prioritization of advancing the geographic frontiers even while the already-established house churches remained a small minority and politically impotent/irrelevant in the worldly system (Rom 15:19-24)
4. Full consecration: a sense of “going all in” with tangible mutual love and provision among the brethren, sacrifice, and kingdom-seeking (Acts 2:42-47)
5. Such fidelity to the royal decree of King Jesus that the persecutorial threats of human rulers would not quiet them nor the enticing treasures of worldliness entangle them (Acts 4:19-37)