When expressed in terms of the model of a chain of causes and effects, the traditional ordo salutis runs the danger of displacing Christ from the central place in soteriology. Â The fruits of his work may be related to one another in the chain of cause-and-effect sequence, rather than viewed fundamentally in relation to the work of the Spirit in bringing us into union and communion with Christ himself. Â Thus, election is spoken of as the cause of regeneration, which in turn is the cause of faith, of which sanctification and perseverance are the invariable and inevitable effects. Â The relation of each to Christ himself is thus obscured or even minimized.
Sinclair Ferguson, The Holy Spirit (Downers Grove: InterVarsity Press, 1996), 99.
photo by Tyler Ingram

I appeal to you, brothers, to watch out for those who cause divisions and create obstacles contrary to the doctrine that you have been taught; avoid them. For such persons do not serve our Lord Christ, but their own appetites, and by smooth talk and flattery they deceive the hearts of the naïve. (Romans 16:17-18)