If you keep going on your way, it is far more likely that you will definitely see a bright light ahead.
It is no doubt that you can definitely see a bright light ahead in the direction you go.
"あなたが目指す方向は必ず明るい "
接続詞 ifを使った場合
If you keep going on your way, it is far more likely that you will definitely see a bright light ahead.
自分の道を突き進めば、きっとその先には明るい光がきっと見えるでしょう。
疑う余地がない It is no doubt that ~を使った場合
It is no doubt that you can definitely see a bright light ahead in the direction you go.
あなたが進む方向の先にはきっと明るい光があることは疑う余地がない。
日本 
