Here is the paragraph in which he said it to provide some context:
Never mind the dumbbells like the ones listed above; they don’t know about what they are talking. To say that salvation was “by grace . . . through faith” (see Eph. 2:8) in both Testaments (the position taken by the faculty members of every major Fundamental and Conservative College, University, and Seminary in America) is anti-biblical heresy of the worst sort. People in the Old Testament did not even go to the same place as people in the New Testament. Abraham, Isaac, and Jacob did not go where you go when you die (2 Cor. 5:8 cf. Eph. 4:8–10); that is an undeniable Biblical fact. (Bible Believers' Bulletin, July 2011, p. 2)
Ruckman sometimes has guest speakers preach in his church who believe salvation was by grace through faith in both testaments. Considering how Ruckman labeled those who hold this view, could it not be said that Ruckman sometimes has fellowship with and invites those who hold to what he considers "anti-biblical heresy of the worst sort" to preach in his pulpit?
For more on this topic, we recommend the following article: Ruckman's multiple plans of salvation for different ages.