John 16:25 - Matthew Poole's English Annotations on the Holy Bible

That by proverbs is meant any dark sayings, is plain from the opposition in the text of that term plainly. Christ had spoken, though not all things, yet many things to them in dark phrases, and under many figurative expressions; but (saith he) the time cometh, when I shall show you plainly of the Father: that time is either Christ's second coming, or after the pouring out of the Spirit, which latter is most probably what our Saviour doth here intend, because of those great measures of knowledge which at and after that time were given out. He had before given to his disciples to know the mysteries of the kingdom of heaven, far beyond others, Matthew 13:11; but yet it appears by 1 Thessalonians 14:1-6, and many other texts, that they had a very confused and imperfect knowledge of the Trinity, and Christ's oneness with the Father, and their mutual personal relation one to another.