The 2LCF is a confession of faith.
It is important to remind ourselves that the 2LCF is a confession of faith, a confession of what subscribers to it believe the totality of the Bible teaches on given subjects. The confession is not merely a reference point from which we subsequently or further develop doctrinal conclusions; it is our doctrinal conclusions on the subjects which it addresses. Because the confession summarizes what the Bible teaches on given subjects, this means that all of the Bible is considered in the formulation of chapter 4. You can see this by noticing the Scripture references in 4.1. These texts are cited: John 1:2-3; Hebrews 1:2; Job 26:13; Romans 1:20; Colossians 1:16; and Genesis 1:31. These references display an unrestricted canonical consultation while formulating 4.1.  This use of Scripture in the formulation of its statement on creation indicates a distinct working hermeneutic (confessed in 1.9, which we will examine later). This method of interpretation is an illustration of the analogy of faith. In other words, when formulating Christian doctrine, we must allow the totality of Scripture to speak prior to our formulations. We will return to this later. It is a very important issue.
 See Stefan T. Lindblad, “’Eternally Begotten of the Father’: An Analysis of the Second London Confession of Faith’s Doctrine of the Eternal Generation of the Son,” in By Common Confession: Essays in Honor of James M. Renihan, eds. Ronald S. Baines, Richard C. Barcellos, and James P. Butler (Palmdale, CA: RBAP, 2015), 338, for a brief but helpful discussion “regarding the 2LCF’s practice of citing biblical texts.”