You've got a ton of air in the lines if you replaced a brake line. The same amount that came out of the brake line when you took it off!
If you remove the bleeder and start pumping the brake pedal, you are simply pusing air out and then when you release the brake pedal, you suck the air back in again. You need to fill the master cylinder, tighten the bleeder valve and pump the brake pedal a few times. Then have your buddy hold down on the brake pedal while you loosen it. When you loosen it, the pedal will go all the way to the floor. MAKE SURE YOUR BUDDY KEEPS PRESSURE ON THE PEDAL UNTIL IT GOES TO THE FLOOR AN YOU TIGHTEN THE BLEEDER BACK UP! You'll hear the air escape. Get comfortable, you will be there a little while. You keep this process up: pump the pedal, hold the pedal down, loosen the bleeder, pedal goes to the floor, tighten the bleeder, start over again.
Keep this up until when you loosen the bleeder all that comes out is a good strong stream of brake fluid with no bubbles.
Then pump the pedal a few times and you're done.