The ORIGIN of Sunday praying:

PRLog (Press Release) - Jan. 7, 2009 - QS.Al Ma’idah(5)112 Behold! the disciples said: "O Jesus the son of Mary! can thy Lord send down to us a table set (with viands) from heaven?" Said Jesus: "Fear Allah if ye have faith."

113 They said: "We only wish to eat thereof and satisfy our hearts and to know that thou hast indeed told us the truth; and that we ourselves may be witnesses to the miracle.

114 Said Jesus the son of Mary: "O Allah our Lord! send us from heaven a table set (with viands) that there may be for us for the first and the last of us a solemn festival and a sign from Thee; and provide for our sustenance for Thou art the best Sustainer (of our needs).
QS.Al Mu’minun(23):50 And We made the son of Mary and his mother as a Sign: We gave them both shelter on high ground affording rest and security and furnished with springs.

Jesus could talk since he was a baby:
QS.Az Zukhruf (43):63 When Jesus came with Clear Signs he said: "Now have I come to you with Wisdom and in order to make clear to you some of the (points) on which ye dispute: therefore fear Allah and obey me.

64 "For Allah; He is my Lord and your Lord: so worship ye Him: this is a Straight Way."

65 But sects from among themselves fell into disagreement: then woe to the wrongdoers from the Penalty of a Grievous Day!

QS.Al Hadid (57):27 Then in their wake We followed them up with (others of) Our apostles: We sent after them Jesus the son of Mary and bestowed on him the Gospel; and We ordained in the hearts of those who followed him Compassion and Mercy. But the monasticism which they invented for themselves We did not prescribe for them: (We commanded) only the seeking for the Good pleasure of Allah; but that they did not foster as they should have done. Yet We bestowed on those among them who believed their (due) reward but many of them are rebellious transgressors.
QS.Ash Shaffat(61):14 O ye who believe! be ye helpers of Allah: as said Jesus the son of Mary to the Disciples "Who will be my helpers to (the work of) Allah?" Said the Disciples "We are Allah's helpers!" Then a portion of the Children of Israel believed and a portion disbelieved: but We gave power to those who believed against their enemies and they became the ones that PREVAILED.