6 Bible Verses about Being Assertive

but speaking truthfully in love, we might grow up in all things, into him who is the head, even the Christ,

You have heard that it was said: An eye for an eye, and a tooth for a tooth. But I say to you, Resist not the injurious. But whoever will smite you on your right cheek, turn to him the other also. And to him that will go to law with you, and take away your coat, give your mantle also.read more.
And whoever will compel you to go one mile, go with him two. Give to him that asks of you; and from him that would borrow of you, turn not away.

And he himself gave some to be apostles, and some, prophets; and some, evangelists; and some, pastors and teachers; for the complete instruction of the saints, for the work of the ministry, for the building up of the body of the Christ,

Since then we have such hope, we use great plainness of speech,

Be angry, and yet do not sin: let not the sun go down on your wrath, nor give place to the devil.

(for the weapons of our warfare are not carnal, but mighty, through God, for the overthrowing of strongholds,) overthrowing reasonings and every high thing that exalts itself against the knowledge of God, and leading captive every thought to the obedience of the Christ,