Quite often toleration is very commendable. May God make us tolerant men and women. It is a sign of growing in grace. But with regard to the Gospel, toleration is the first step towards apostasy. This is illustrated throughout the Old Testament. The children of Israel were called upon to completely eradicate the peoples of the lands God gave them. When they failed to do so, it invariably became a snare to them. They would begin to tolerate their false religion, and leave God.
In the New Testament, when false doctrine was tolerated in a church, it acted like the leaven that leavened the whole lump (Gal. 5:1-9). The Lord Jesus was displeased with several of the seven churches in Revelation 2 and 3 because of their toleration of those in their midst who held to the doctrine of Baalim and the doctrine of Nicolaitanes (Rev. 2:14-15). Because the church at Thyratira "sufferest that woman Jezebel....to teach" the Lord was displeased with them. Notice, it was not so much what they did, but what they allowed to be done, what they tolerated that the Lord was displeased with. This sinful toleration is certainly easier for the flesh.
To go with the flow, never stir up anything, and never be faced with conflict. It is much easier to condemn as to harsh those who stand for God's truth and are opposed to those who either teach or tolerate that which does not glorify Christ. But be warned. This spirit of toleration toward false doctrine is the first step toward apostasy. The scriptures gives us many examples of this! To tolerate that which is contrary to Christ is no different than tolerating unfaithfulness in your spouse. If we can tolerate our spouse having illicit relationships with others, it says we don't really love our spouse in the first place! And if we tolerate doctrine that does not give Christ all the glory, it says we do not really love Him. In this sense, toleration is intolerable
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