Idiosyncrasy - Throughout His earthly ministry, Jesus had been in close and intimate spiritual communion with God the Father, but when He took on the sins of the world, in order to take the punishment for them, He was cut off from communion with His Father, who, being so holy, will not look upon sin, therefore whilst Jesus hung suffering on the cross, He did not even have the comfort of His loving Father.
Never has a man been so completely alone, as our Lord, as He was crucified taking the punishment for our sin.