jasoncran said:
thats in reference that if we are called to perform to pay a tax, obey a law and render respect to the goverment we do just that. of course, as long as it doesnt contradict the word of the Lord.
see romans 13, and the acts of apostles.
I do not think that this is Jesus's point, altough I understand why you might think so.
Here is a different interpretation from theologian NT Wright:
Show Me the coin used for the poll-tax." And they brought Him a denarius. 20And He said to them, "Whose likeness and inscription is this?" 21They said to Him, "Caesar's." Then He said to them, "Then render to Caesar the things that are Caesar's; and to God the things that are God's.â€
Now this is a cryptic statement whose meaning is not obvious. For some reason, it has been taken to mean that the world is split into two spheres, one in which God rules and the other in which secular human governments rule. However, this is not what Jesus is trying to tell us. And if it was, then Paul would be contradicting Jesus when, in Romans 1, Paul announces the “gospel†of Jesus Christ.
Of what relevance is Romans 1? Well, in Paul’s world the term “gospel†was frequently used to denote the news that a new emperor has ascended to the throne in Rome. So when Paul uses this same term to refer to Jesus, his point could not be more clear – Jesus supplants Caesar as lord of this present world.
Back to the account of the coin. Just as it is important to know something about what the term “gospel†meant in that time and place, it is also important to know the echoes that Jesus might be eliciting when He makes his coin pronouncement.
The double command Jesus makes (give x to Ceasar and y to God) can be argued to draw on material found in 1 Maccabees 2.68. In that text, Mattathias is telling his sons, especially Judas, to get ready for revolution. ‘Pay back to the Gentiles what is due to them,’ he says, ‘and keep the law’s commands’. And clearly, “paying back†the Gentiles was not meant to refer to money. Instead, it is a subtle suggestion that the Gentiles are about to be overthrown. And I suggest that Jesus is making a cryptic allusion to this account to make a similar point.
So while Jesus is, on the surface, saying “pay the taxâ€, His more fundamental point is that Caesar’s regime is a blasphemous nonsense and that one day God would overthrow it.
Jesus’ teaching about the Roman coin, understood in it context, is not advocating a separation between the spheres of Caesar and God, with secular human governments ruling in one domain and God in the other. Given the overall context of Jesus’ life and ministry – entailing the revolutionary announcement that the Kingdom of God has already broken into history – and given the arguable allusion to 1 Maccabees, Jesus is probably saying, albeit cryptically, that God’s dominion extends to all spheres. One can almost see Jesus wryly smiling as he says “give Ceasar the things that are His†– suggesting that there really is nothing that falls into that category.
I do not think I am reaching when I suggest that when Jesus holds up the coin and inquires about the image and the inscription, He knows the Jews will be reminded of the graven image to Caesar that it contains. Any Jew familiar with the Torah should have rightly bristled at such blasphemy. And remember, the emperor in Rome did indeed set himself up as a god. Jesus is being very shrewd here. The holding up of the coin and the question about its image constitutes a critique of the blasphemy that it expresses. And so Jesus’ clever answer is effectively this: “Pay the tax, but remember who s the real Lord, the one who says ‘You shall have no other gods before me’â€.
That short note was to be simple??? Let me just say that 
