And I know my sheep, and am known by mine. In the former clause, he again holds out his love towards us; for knowledge proceeds from love, and is accompanied by care. But it means also that he utterly disregards all who do not obey the Gospel, as he repeats in the second clause, and confirms what he had formerly said, that -- on the other hand -- he is known by the sheep

Know my sheep - Know my people, or my church. The word "know" here is used in the sense of affectionate regard or love. It implies such a knowledge of their wants, their dangers, and their characters, as to result in a deep interest in their welfare. Thus the word "knoweth," in John 10:15, is in John 10:17 explained by the word "loveth." Jesus knows the hearts, the dangers, and the wants of his people, and his kindness as their shepherd prompts him to defend and aid them.
Am known of mine - That is, he is known and loved as their Saviour and Friend. They have seen their sins, and dangers: and wants; they have felt their need of a Saviour; they have come to him, and they have found him and his doctrines to be such as they need, and they have loved him. And as a flock follows and obeys its kind shepherd, so they follow and obey him who leads them beside the still waters, and makes them to lie down in green pastures.

I - know my sheep - I know, τα εμα, them that are mine: I know their hearts, their wishes, their purposes, their circumstances; and I approve of them; for in this sense the word to know is often taken in the Scriptures. Homer represents the goatherds as being so well acquainted with their own, though mixed with others, as easily to distinguish them.
Τους δ', ὡς' αιπολια πλατε' αιγων αιπολοι ανδρες
Ῥεια διακρινεωσιν, επει κε νομῳ μιγεωσιν.
Iliad. 2. 474.
"As goat-herds separate their numerous flocks
With ease, though fed promiscuous."
And are known of mine - They know me as their father, protector, and Savior; they acknowledge me and my truth before the world; and they approve of me, my word, my ordinances, and my people, and manifest this by their attachment to me, and their zeal for my glory. The first clause of the 15th verse should be joined to the fourteenth.

I am the good shepherd,.... See Gill on John 10:11.
And know my sheep; so as to call them all by their names: Christ has an universal, special, distinct, and exact knowledge of all his sheep, as they are the choice of his Father, as his Father's gift to him; and as his own purchase; he bears an affectionate love to them, and takes special care of them; indulges them with intimate communion with himself; and owns and acknowledges them as his, both here and hereafter:
and I am known of mine; not in a general way, as devils and external professors may know him, but with a special, spiritual, and saving knowledge: Christ's own approve of him, as their shepherd and their Saviour, and desire no other; they love him above all, in the sincerity of their souls, and with a love as strong as death; they trust in him as their shepherd, believing they shall not want; and appropriate him to themselves, as their own; and care for him, his cause and interest, his Gospel, ordinances, and ministers; and are not ashamed to own him as theirs, in the most public manner.

I am the good shepherd, and know my sheep--in the peculiar sense of 2-Timothy 2:19.
am known of mine--the soul's response to the voice that has inwardly and efficaciously called it; for of this mutual loving acquaintance ours is the effect of His. "The Redeemer's knowledge of us is the active element, penetrating us with His power and life; that of believers is the passive principle, the reception of His life and light. In this reception, however, an assimilation of the soul to the sublime object of its knowledge and love takes place; and thus an activity, though a derived one, is unfolded, which shows itself in obedience to His commands" [OLSHAUSEN]. From this mutual knowledge Jesus rises to another and loftier reciprocity of knowledge.

I know my sheep - With a tender regard and special care: and am known of mine - With a holy confidence and affection.