G4907–σύνεσις–sunesis

and To love Him with all one's heart, with all one's understanding, and with all one's strength, and to love one's fellow man no less than oneself, is far better than all our whole burnt-offerings and sacrifices."

συνέσεως suneseōs “understanding”

while all who heard Him were astonished at His intelligence and at the answers He gave.

συνέσει sunesei “understanding”

For so it stands written, "I will exhibit the nothingness of the wisdom of the wise, and the intelligence of the intelligent I will bring to nought."

σύνεσιν sunesin “intelligence”

By means of that explanation, as you read it, you can judge of my insight into the truth of Christ

σύνεσίν sunesin “insight”

For this reason we also, from the day we first received these tidings, have never ceased to pray for you and to entreat that you may be filled with a clear knowledge of His will accompanied by thorough wisdom and discernment in spiritual things;

συνέσει sunesei “in understanding”

in order that their hearts may be cheered, they themselves being welded together in love and enjoying all the advantages of a reasonable certainty, till at last they attain the full knowledge of God's truth, which is Christ Himself.

συνέσεως suneseōs “of understanding”

Mark well what I am saying: the Lord will give you discernment in everything.

σύνεσιν sunesin “understanding”