If we do not walk in holiness, we not only incur God’s chastisement, but equally we may trouble and defile our church. We have to take great care to watch carefully.
In the covenant written by Benjamin Keech, one of the provisions is a kind of pledge that we are in satisfied in good measure about the work of God in each other's hearts. We pledge ourselves to walk together for the Lord. It is a good practice in a local church that when anyone professes the Lord and applies for membership, they write out their testimony and read it out in a public meeting so that the existing members may be satisfied in good measure concerning the work of grace in their hearts.
We have to watch ourselves. We have to look for the unhappy event of somebody becoming impatient or peevish or proud or covetous. This can spread through a congregation: some prominent person spoils and younger believers see and their conscience about this is fractured, and they take on the same behaviour. ‘Lest any root of bitterness’ – there is a root inside all of us of inner corruption. The new nature has been created within us, but the residual old nature is still there deep down within us: ‘the old man’, the apostle Paul calls it, the body of sin, the flesh. We are to keep it down and let the new nature prevail over it by the help of the Holy Spirit. So if there is hypocrisy or anger or failure of faith and trust, we help one another and we admonish and encourage one another.