1 John 2:20 But ye have an unction from the Holy One, and ye know all things.
21 I have not written unto you because ye know not the truth, but because ye know it, and that no lie is of the truth.
We see in these two verses we can know God by having the Spirit anointing and truth. The first verse says we have an anointing from the Holy Spirit which is our teacher and guide.This helps us to gain the knowledge we need to do the will of God. next it shows us that as we learn we see that the truth is the only thing we need to speak. John is only writing to the Christians so he knows they know the truth and any compromise to that is a lie. As Christians we should brave and bold enough to speak the truth in any situation even if it hurts a little bit.