The Apostle Paul
Romans 16:2ESV·traditional attribution

that you may welcome her in the Lord in a way worthy of the saints, and help her in whatever she may need from you, for she has been a patron of many and of myself as well.

Matthew Henry Presbyterian @wholebiblehenry

Such remembrances as these are usual in letters between friends; and yet Paul, by the savouriness of his expressions, sanctifies these common compliments. I. Here is the recommendation of a friend, by whom (as some think) this epistle was sent - one Phebe, Rom 16:1, Rom 16:2.

Commenting on Romans 16:1-16

John Gill Reformed Baptist @doctorgill

That ye receive her in the Lord,.... This is one thing he recommends her to them for, that they would receive her in a kind and friendly manner into their houses, and into their hearts' love and affections; admit her to their private meetings, and into church fellowship with them, and that as one that was in the Lord, and belonged to him; and also...

Albert Barnes Presbyterian @notesbybarnes

Verse 2. That ye receive her, etc. That you acknowledge her as being in the Lord, or as being a servant of the Lord; that is, as a Christian. Comp. . As becometh saints. As it is proper that Christians should treat their brethren. She hath been a succourer of many.