Allow both to grow together until the harvest; and at the time of the harvest, I will say to the reapers, “First gather up the weeds and bind them in bundles to burn them; but gather the wheat into my barn.” – Matthew 13:30
In this parable, Jesus illustrated the spiritual composition of His earthly kingdom. The point of His instruction seemed to be that the only way to discern the difference between those who claim to know the Savior and those who truly do is whether or not they go forth and bear fruit. Of course, spiritual fruit and the bearing of it (while observable by man) may only be measured by God, and since our lives are not measured by a moment, but rather by the sum of them, only God is able to judge.
Until that time when we will all (individually or corporately) come face-to-face with the Almighty, “wheat (true believers)” and “weeds (false believers)” will populate this world. Upon the authority and truth of God’s Word, which are you? If you believe yourself to be a fruit-bearer, then examine that fruit to see if it is something that could only be produced by the Lord. Love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, and self-control in evidence when coupled with a desire for Christ to receive all the glory are not usually or easily counterfeited. Keep bearing.
If, on the other hand, your life lacks the obvious produce of authentic faith, then welcome God’s piercing examination accompanied by His mercy and grace. He is ready to redeem.
Nothing will make us so charitable and tender to the faults of others, as, by self-examination, thoroughly to know our own. – Francois Fenelon