People love thread heaven but I am cheap and just use any old candle wax I have. Thread and knot the needle
w/ 18 - 20" of thread. Run the thread over the candle to load it with the wax and then the magic step I do is to run the thread under a warm iron to melt off the excess wax. This gives the thread a nice body and I never have twists or knots.
I learned this on the QB and wish I could remember who posted it years ago. I give thanks to them when ever I use needle and thread.
peace