The Greek word gathering we are using here is is ep-ee-soon-ag-o-gay’ it means a complete collection and it is only found in two places in the New Testament.
2nd Thessalonians 2:1-2 “Now we beseech you, brethren, by the coming of our Lord Jesus Christ, and by our gathering together unto him, That ye be not soon shaken in mind, or be troubled, neither by spirit, nor by word, nor by letter as from us, as that the day of Christ is at hand.”
Hebrews 10:24-25 “And let us consider one another to provoke unto love and to good works: Not forsaking the assembling of ourselves together, as the manner of some is; but exhorting one another: and so much the more, as ye see the day approaching.”