'Closer' in the Bible

The man of too many friends [chosen indiscriminately] will be broken in pieces and come to ruin,But there is a [true, loving] friend who [is reliable and] sticks closer than a brother.

For this reason [that is, because of God’s final revelation in His Son Jesus and because of Jesus’ superiority to the angels] we must pay much closer attention than ever to the things that we have heard, so that we do not [in any way] drift away from truth.