1 Timothy 5:3

Directions are here given concerning the taking of widows into the number of those who were employed by the church and had maintenance from the church: Honour widows that are widows indeed. Honour them, that is, maintain them, admit them into office. There was in those times an office in the church in which widows were employed, and that was to tend the sick and the aged, to look to them by the direction of the deacons. We read of the care taken of widows immediately upon the first forming of the Christian church (Act 6:1), where the Grecians thought their widows were neglected in the daily ministration and provision made for poor widows. The general rule is to honour widows that are widows indeed, to maintain them, to relieve them with respect and tenderness. I. It is appointed that those widows only should be relieved by the charity of the church who were pious and devout, and not wanton widows that lived in pleasure, Ti1 5:5, Ti1 5:6. She is to be reckoned a widow indeed, and it to be maintained at the church's charge, who, being desolate, trusteth in God. Observe, It is the duty and comfort of those who are desolate to trust in God. Therefore God sometimes brings his people into such straits that they have nothing else to trust to, that they may with more confidence trust in him.

— Matthew Henry's Concise Commentary (public domain)

Honour--by setting on the church roll, as fit objects of charitable sustenance (Ti1 5:9, Ti1 5:17-18; Act 6:1). So "honor" is used for support with necessaries (Mat 15:4, Mat 15:6; Act 28:10). widows indeed-- (Ti1 5:16). Those really desolate; not like those (Ti1 5:4) having children or relations answerable for their support, nor like those (in Ti1 5:6) "who live in pleasure"; but such as, from their earthly desolation as to friends, are most likely to trust wholly in God, persevere in continual prayers, and carry out the religious duties assigned to Church widows (Ti1 5:5). Care for widows was transferred from the Jewish economy to the Christian (Deu 14:29; Deu 16:11; Deu 24:17, Deu 24:19).

— Jamieson-Fausset-Brown Commentary (public domain)