Why was Jesus tempted by Satan?
Those sentences which are colored in orange are from Maharishi Dayananda Saraswati book Satyarth Prakash (The Light of Truth) and those which are colored in black are Jerry Thomas’s response.
"Then was Jesus led up of the spirit into the wilderness to be tempted of the devil. And when he had fasted forty days and forty nights, he was afterward an hungered. And when the tempter came to him, he said, If thou be the Son of God, command that these stones be made bread." (4: 1 – 3.) C. This conclusively proves that the Christian God was not omniscient, otherwise, why should He have had Jesus tempted of the devil? He would have known all about him by his Omniscience. Will a Christian live of he be kept without food for 40 days and 40 nights? It also proves that Jesus was neither the son of God nor did he possess any miraculous power or why would he not have turned stones into bread. Why would he have himself suffered from the pangs of hunger? The truth is that what God has created as stones no one could ever turn into bread, or could God Himself subvert His laws ordained by Himself since He is Omniscient and, all His works are free from error.
Answer: The contention that no one can turn stone into bread is nothing but a prejudice against miracles. This has been already addressed in the question for Matthew 1:18:20. That answer suffices here also.
As for the questions on why LORD Jesus Christ was tempted and why he suffered are already answered by the Holy Bible itself. It was Maharishi who had to tell why those answers were not satisfactory.
Hebrews 2:14-18 Inasmuch then as the children have partaken of flesh and blood, He Himself likewise shared in the same, that through death He might destroy him who had the power of death, that is, the devil, and release those who through fear of death were all their lifetime subject to bondage. For indeed He does not give aid to angels, but He does give aid to the seed of Abraham. Therefore, in all things He had to be made like His brethren, that He might be a merciful and faithful High Priest in things pertaining to God, to make propitiation for the sins of the people. For in that He Himself has suffered, being tempted, He is able to aid those who are tempted.
The question, whether one can fast for 40 days which is what the Holy Bible said about Jesus, need not be even answered as there are many who still fast for forty days. This shows that the Maharishi did not know what he was speaking.