John 4:32

But He said to them, "I [already] have food to eat that you do not know about."

John 4:34

Jesus answered them, "My food is doing what God, who sent me, wants me to, and accomplishing His work.

Acts 20:35

I have demonstrated before you a [good] example in all [these] things, so that you [too] will work hard to help those who are [physically] weak. [Also] remember the words of the Lord Jesus who Himself said, 'It is a greater blessing [for you] to give [to people's needs] than to receive [help yourselves].' "

Revelation 2:17

"The person who has an ear should listen to what the Holy Spirit is saying to the churches. To the person who has victory [in the Christian life] I will give some of the hidden manna, and I will [also] give him a white stone with a new name written on it, which no one understands, except the one who receives it."

Treasury of Scripture Knowledge

Summary

But he said unto them, I have meat to eat that ye know not of.

Bible References

I have

John 4:34
Jesus answered them, "My food is doing what God, who sent me, wants me to, and accomplishing His work.
Acts 20:35
I have demonstrated before you a [good] example in all [these] things, so that you [too] will work hard to help those who are [physically] weak. [Also] remember the words of the Lord Jesus who Himself said, 'It is a greater blessing [for you] to give [to people's needs] than to receive [help yourselves].' "

That

Revelation 2:17
"The person who has an ear should listen to what the Holy Spirit is saying to the churches. To the person who has victory [in the Christian life] I will give some of the hidden manna, and I will [also] give him a white stone with a new name written on it, which no one understands, except the one who receives it."