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Signs and wonders is a supernatural act of God that cannot be comprehend nor understand by natural law. It can be seen as a force that keeps the action of God in operation in the life of any believer, our true identity are the signs we see in us. Our sonship will be questionable if our life is void of signs, until signs and wonders are seen operating in our lives. Let's take for instance having a car means you knows how to operate it. This is also applicable to all child of God, you have access to unlimited wonders but you must know how to trigger it into work.
Here am I and the children whom the LORD has given me! We are for signs and wonders in Isreal from the LORD of hosts, who dwell in Mount Zion.
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Isaiah 8:18
As a christain, signs beautifies us by adding colours to our christianity. Therefore when a christian is living without signs we are losing value without knowing. What establish our earthly relevance is the signs we command. A sign is what we need for any impossible case, God is only looking for who believe to determine whom his act will follow.
Then Jesus said to him, "Unless you people see signs and wonders, you will by no means believe".
THE FOUNDATION FOR SIGNS
The foundation for signs is to first understand who you really are in christ, when you fully come to term your status in God every other thing will change.
They do not know, nor do they understand; they walk about in darkness; all the foundations of the earth are unstable.
I said, "You are gods, and all of you are children of the Most High.
Psalm 82:5-6
You are a spirit because God is a spirit. If you are born of the spirit then you are a spirit, as a spirit you should not be afraid of the spirit realm because that happens to be your natural habitant. Understanding this will help you to overcome the devil and subdue the flesh because the physical world is subject to the spiritual world, you must subject yourself to operate supernaturally by living in the spirit.
By faith we understand that the worlds were framed by the word of God, so that the things which are seen were not made of things which are visible.
Hebrew 11:3
You are percular
You also, as living stones, are being built up a spiritual house, a holy priesthood, to offer up spiritual sacrifices acceptable to God through Jesus Christ
Therefore it is also contained in the scripture, "Behold, I lay in Zion a chief cornerstone, elect, precious, and he who believes on Him will by no means be put to shame.
But you are a chosen generation, a royal priesthood, a holy nation, His own special people, that you may proclaim the praises of Him who called you out of darkness into His marvelous light.
1 Peter 2:5,6,9
You have been chosen to be different from the crowd, you are not permitted to suffer what the world are suffering, what afflicts others will never know your address. "Why" because you are a chosen generation.
You are an ambassador
Now then, we ambassadors for christ, as though God were pleading through us: we implore you on christ's behalf, be reconciled to God.
I Corint 5:20