John 3:11-12

Verse 11. We speak. Jesus here speaks in the plural number, including himself and those engaged with him in preaching the gospel. Nicodemus had said (Jn 3:2), "We know that thou art," &c., including himself and those with whom he acted. Jesus in reply said, We, who are engaged in spreading the new doctrines about which you have come to inquire, speak what we know. We do not deliver doctrines which we do not practically understand. This is a positive affirmation of Jesus, which he had a right to make about his new doctrine. He knew its truth, and those who came into his kingdom knew it also. We learn here,

1st. That the Pharisees taught doctrines which they did not practically understand. They taught much truth (Mt 23:2), but they were deplorably ignorant of the plainest matters in their practical application.

2nd. Every minister of the gospel ought to be able to appeal to his own experience, and to say that he knows the truth which he is communicating to others.

3rd. Every Sunday-school teacher should be able to say, "I know what I am communicating; I have experienced what is meant by the new birth, and the love of God, and the religion which I am teaching."

Testify. Bear witness to.

That we have seen. Jesus had seen by his omniscient eye all the operations of the Spirit on the hearts of men. His ministers have seen its effects as we see the effects of the wind, and, having seen men changed from sin to holiness, they are qualified to bear witness to the truth and reality of the change. Every successful minister of the gospel thus becomes a witness of the saving power of the gospel.

Ye receive not. Ye Pharisees. Though we give evidence of the truth of the new religion; though miracles axe wrought, and proof is given that this doctrine came from heaven, yet you reject it.

Our witness. Our testimony. The evidence which is furnished by miracles and by the saving power of the gospel. Men reject revelation though it is attested by the strongest evidence, and though it is constantly producing the most desirable changes in the hearts and lives of men.

(i) "We speak that we do know" 1Jn 1:1-8.
Verse 12. If I have told you earthly things. Things which occur on earth. Not sensual or worldly things, for Jesus had said nothing of these; but he had told him of operations of the Spirit which had occurred on earth, whose effects were visible, and which might be, therefore, believed. These were the plainest and most obvious of the doctrines of religion.

How shall ye believe. How will you believe. Is there any probability that you will understand them?

Heavenly things. Things pertaining to the government of God and his doings in the heavens; things which are removed from human view, and which cannot be subjected to human sight; the more profound and inscrutable things pertaining to the redemption of men. Learn hence,

1st. The height and depth of the doctrines of religion. There is much that we cannot yet understand.

2nd. The feebleness of our understandings and the corruptions of our hearts are the real causes why doctrines of religion are so little understood by us.

3rd. There is before us a vast eternity, and there are profound wonders of God's government, to be the study of the righteous, and to be seen and admired by them for ever and ever.
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