First, I'd like to point out that many self-professing Christians aren't Christians at all. They may warm a pew for one hour on Sunday, but they don't know Jesus Christ and Jesus Christ doesn't know them. I say this for those who call God a liar about His Creation and believe Darwin first - all the while claiming to be Christians. God knows them that are His.
Matthew 7:23 And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.
The day will come when Almighty God will lose His Patience and pour out His Holy Wrath. God laughs at the workers of evil and iniquity. God has good reason to laugh at those who take counsel against Him and mock Him. He is All Powerful and knows the ending.
Psalms 2:1-12 Why do the heathen rage, and the people imagine a vain thing? 2 The kings of the earth set themselves, and the rulers take counsel together, against the LORD, and against his anointed, saying, 3 Let us break their bands asunder, and cast away their cords from us. 4 He that sitteth in the heavens shall laugh: the Lord shall have them in derision. 5 Then shall he speak unto them in his wrath, and vex them in his sore displeasure. 6 Yet have I set my king upon my holy hill of Zion. 7 I will declare the decree: the LORD hath said unto me, Thou art my Son; this day have I begotten thee. 8 Ask of me, and I shall give thee the heathen for thine inheritance, and the uttermost parts of the earth for thy possession. 9 Thou shalt break them with a rod of iron; thou shalt dash them in pieces like a potter's vessel. 10 Be wise now therefore, O ye kings: be instructed, ye judges of the earth. 11 Serve the LORD with fear, and rejoice with trembling. 12 Kiss the Son, lest he be angry, and ye perish from the way, when his wrath is kindled but a little. Blessed are all they that put their trust in him.
Psalms 37:9-18 For evildoers shall be cut off: but those that wait upon the LORD, they shall inherit the earth. 10 For yet a little while, and the wicked shall not be: yea, thou shalt diligently consider his place, and it shall not be. 11 But the meek shall inherit the earth; and shall delight themselves in the abundance of peace. 12 The wicked plotteth against the just, and gnasheth upon him with his teeth. 13 The Lord shall laugh at him: for he seeth that his day is coming. 14 The wicked have drawn out the sword, and have bent their bow, to cast down the poor and needy, and to slay such as be of upright conversation. 15 Their sword shall enter into their own heart, and their bows shall be broken. 16 A little that a righteous man hath is better than the riches of many wicked. 17 For the arms of the wicked shall be broken: but the LORD upholdeth the righteous. 18 The LORD knoweth the days of the upright: and their inheritance shall be for ever.
Psalms 59:8 But thou, O LORD, shalt laugh at them; thou shalt have all the heathen in derision.
It would be wise to repent before it's too late, but God also knows that many men aren't wise.