John the Apostle
John 14:16ESV·traditional attribution

And I will ask the Father, and he will give you another Helper, to be with you forever,

John Calvin Reformed @genevareformer

16. And I will pray to the Father. This was given as a remedy for soothing the grief which they might feel on account of Christ’s absence; but at the same time, Christ promises that he will give them strength to keep his commandments; For otherwise the exhortation would have had little effect.

Matthew Henry Presbyterian @wholebiblehenry

Christ not only proposes such things to them as were the matter of their comfort, but here promises to send the Spirit, whose office it should be to be their Comforter, to impress these things upon them. I. He premises to this a memento of duty (Joh 14:15): If you love me, keep my commandments.

Commenting on John 14:15-17

John Gill Reformed Baptist @doctorgill

And I will pray the Father,...., Here Christ speaks as Mediator, and promises his disciples, that he would intercede for them with the Father; which is designed as an encouragement to them to ask for what they want, in his name, and to comfort their hearts, which were troubled at the news of his departure from them; and he shall give you another Comforter.