You are getting Arminian-influenced, dispensational teaching not accountable by Confession (before you even get to other issues).
Could you ever learn something biblically true from this person? Probably yes, but it's more likely you will get an overall unbiblical systematic framework.
Ask your friend if he can recommend something by Spurgeon, Piper or Sproul.
Post Tenebras Lux; "And God shall wipe away all tears from their eyes; and there shall be no more death, neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away." - Revelation 21:4