Titus 2:1 But as for you, teach what is consistent with sound doctrine. 2 Tell the older men to be temperate, serious, prudent, and sound in faith, in love, and in endurance.
There must be consistency found in sound doctrine, and that consistency is to be found in a person's actions or behaviors. These are pointed out in the second sentence. Sound doctrine is to be revealed in a life of temperance, seriousness, prudence, “sound in faith, in love, and in endurance.” Words are empty if they are not supported by the actions of the preacher.
We may speak about doctrine, argue about doctrine and preach doctrine, but if we do not live doctrine our words will ring hollow.
Much time can be spent weighing in on issues of the day. We can write and speak about our opinions but there is a danger that this will so occupy our time that we forget that we are to be living out our doctrines. Our lives are living testimonies to that which we truly believe.